The present invention relates to a novel synthetic route for the preparation of raltegravir and pharmaceutically acceptable salts, starting from 2-amino-2-methylpropanenitrile and oxadiazole carbonyl chloride, through the formation of a pyrimidinone intermediate of formula (V).
Identification, Synthesis, and Strategy For Minimization of Potential Impurities Observed In Raltegravir Potassium Drug Substance
作者:Gulabrao D. Patil、Siddheshwar W. Kshirsagar、Shivnath B. Shinde、Pankaj S. Patil、Mangesh S. Deshpande、Ashok T. Chaudhari、Swapnil P. Sonawane、Golak C. Maikap、Mukund K. Gurjar
DOI:10.1021/op300077m
日期:2012.8.17
Multiple sources of anticipated degradation and process impurities of raltegravir potassium drug substance observed during the laboratory optimization and later during its bulk synthesis are described in this article. The impurities were monitored by UPLC, and their structures are tentatively assigned on the basis of fragmentation patterns in LC-MS and NMR spectroscopy. Most of the impurities are synthesized, and their assigned constitutions were confirmed by co-injection in UPLC. In addition to the formation, synthesis, and characterization, strategy for minimizing these impurities to the level accepted by ICH is also described. We feel that our study will be helpful to the generic industry for obtaining chemically pure raltegravir potassium.
US9403809B2
申请人:——
公开号:US9403809B2
公开(公告)日:2016-08-02
US9475799B1
申请人:——
公开号:US9475799B1
公开(公告)日:2016-10-25
[EN] SYNTHESIS OF RALTEGRAVIR<br/>[FR] SYNTHÈSE DE RALTÉGRAVIR
申请人:EMCURE PHARMACEUTICALS LTD
公开号:WO2013098854A2
公开(公告)日:2013-07-04
The present invention relates to a novel synthetic route for the preparation of raltegravir and pharmaceutically acceptable salts, starting from 2-amino-2- methylpropanenitrile and oxadiazole carbonyl chloride, through the formation of a pyrimidinone intermediate of formula (V).